Consolidated statements of comprehensive income (loss) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Consolidated statements of comprehensive income (loss)
Net income (loss)	$ 22,006	$ (4,452,305)	$ 2,384,729
Foreign currency translation adjustment	97,306	78,654	(13,129)
Total comprehensive income (loss)	$ 119,312	$ (4,373,651)	$ 2,371,600